A candidate for Brooklyn borough president charged yesterday that his borough would be railroaded by the state’s $3.8 billion Transportation Bond Act.

City Councilman Ken Fisher urged voters not to authorize the added borrowing when they go to the polls Nov. 7, saying not one “key project” will directly benefit Brooklynites.

“There have been substantial improvements made in cutting the commuting times even further for [suburbanites], but the investments made in the New York City subway system has been mostly in maintaining the status quo,” charged Fisher, one of three top contenders for Brooklyn beep next year.

Fisher produced a chart showing that it takes D train riders 70 minutes to travel 9.7 miles from Coney Island to Herald Square – the same time that a Bay Shore, L.I., commuter zips the 42.5 miles to Penn Station on the Long Island Rail Road.

According to Fisher, almost 40 percent of Brooklyn residents work in Manhattan and about one-third of all transit riders into Manhattan every day are from Brooklyn.

He said just $6 million could open unused express lines for the F train from Coney Island and the boarded up Chrystie Street connection for the J, M and D lines.

Joanne Seminara, co-president of the Alliance of Bay Ridge Block Associations, joined Fisher to express frustration about subway service in her neighborhood.

“The R train has some of the longest waits in the city,” she complained. “We can’t get to Midtown in less than an hour . . . The B train has some of the largest breakdown percentages. And again we’re being left out.”

Seminara said that 20 years ago, when there was express service to 59th Street on the N line, a trip that takes 70 minutes today was covered in 35.

But Gene Russianoff of the Straphangers Campaign said Fisher is on the wrong track.

“I disagree with him,” Russianoff said. “Those are the right problems. But the solution isn’t to starve the transit system of billions of dollars in fix-up money . . .

“Ken should know better. His father ran the MTA when it was starved for fix-up money. Defeating the bond act will be less, not more money, for everywhere, including Brooklyn.”